Boot



FIG. 1 is a front perspective view of a boot showing my new design;

FIG. 2 is a right side view thereof; and,

FIG. 3 is a left side view thereof.

The broken line showing of the heel, portion of the upper, buckle, strap, and zipper is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a boot, as shown and described. 